I think Aphro is in a favorable position atm (20% CDR off the bat with mages blessing and 55 power focus, very good at using spear). One buff I've suggested in the past she get is being able to benefit from her own Jealousy buff which isn't even available to her, only her soulmates.
Kiss having cleanse would be too strong when the ability already homes in on allies at all costs.
Also to whoever mentioned kiss should also give a soulmate her hp5 and mp5, it already gives them 70% of her total mana regen.